%0 Journal Article %A Ch. A. Skhalyaho %T Oscillatory and nonoscillatory nature of solutions of a two-dimensional system of nonlinear differential equations %J Differencialʹnye uravneniâ %D 1981 %P 1702-1705 %V 17 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1981_17_9_a24/ %G ru %F DE_1981_17_9_a24